A SEISMIC STUDY OF SHALLOW JOINTED ROCKS

A theory of wave propagation in shallow jointed rocks is presented. The elastic waves from a source are propagated around the tip of an open joint. The depth of the joint is determined from known intercept times, wave velocities and joint spacing. The principles developed in this paper are compared with the theory of seismic refraction, and are verified in model experiments on artificial joints in concrete blocks. Field tests were made in an open pit and an underground mine. An explosive pulse exciter for generation of p- and sh-waves is described. The depth of jointing in the rock walls is determined by field observations and logging in bore holes, and the results confirm the theory. (a) (TRRL)

  • Availability:
  • Corporate Authors:

    Pergamon Press, Incorporated

    Headington Hill Hall
    Oxford OX30BW,   England 
  • Authors:
    • STEPHANSSON, O
    • Lande, G
    • Bodare, A
  • Publication Date: 1979-10

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00309611
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS
  • Created Date: Jul 22 1980 12:00AM